It USES distilled water and alcohol to refine water soluble acid and alkali of sample and then test the extractive with PH indicator.
用蒸馏水或乙醇水溶液抽提试样中的水溶性酸或碱，然后用酸度计或指示剂对抽提物进行测定。
In the form of a water solution or as litmus paper, it is the oldest and most-used indicator of whether a substance is an acid or a Base.
它的水溶液，或者做成石蕊纸后，是最古老和最常用的指示剂，可以指示一种物质是酸还是碱。
A white or pale yellow crystalline powder, C20H 14o 4, used as an acid-base indicator, in making dyes, and in medicine as a laxative.
一种白色或淡黄色的晶体粉末，C20 H14o4，用作酸性指示剂，用于制染料，并在医学上用作一种轻泻剂。
Acid calibration potassium hydroxide, to phenolphthalein as indicator.
钾标定，以酚酞为指示剂。
A white or pale yellow crystalline powder, C20H14O4, used as an acid-base indicator, in making dyes, and in medicine as a laxative.
苯酚酞一种白色或淡黄色的晶体粉末，c20h14o4，用作酸性指示。
The photometric probe is sensitive to the color change of acid chrome K and naphthol green B mixed indicator when Ca 2+ and Mg 2+ are titrated with EDTA.
应用于EDTA滴定钙镁时，该探头能灵敏地响应酸性铬蓝K萘酚绿B混合指示剂的颜色变化，从而实现了自动光度滴定。
Discussed a reason discoloration range of acid-base indicator function reason in a text book, pointed out some discoloration reason problems in the book.
探讨了一本教材中关于酸碱指示剂作用原理的理论变色范围探讨，指出了该教材在理论变色范围推论中存在的问题。
Objective to approach the adaptability of the culture system of a rapid fluorescent growth indicator tube, using various strains of acid-fast mycobacterium.
目的探讨快速荧光生长指示管培养法对各种抗酸分支杆菌菌株培养的适应性。
A new indicator reaction is developed on the basis of manganese-catalyzed oxidation of rhodamine B by potassium periodate with nitrilotriacetic acid as an activator.
本文研究了用氨三乙酸作活化剂锰催化高碘酸钾氧化罗丹明B褪色的新指示反应。
Objective to test whether urinary sulfur excretion can be used as an accurate indicator of the catabolism of sulfur amino acid in growing newborn piglets.
目的验证尿硫测定是否可以在生长迅速的新出生的小猪模型上精确反映含硫氨基酸的分解代谢情况。
Dicranopteris is the plant indicator for acid soils.
芒箕骨是酸性土指示植物，繁殖快，抗逆性强。
The fuzzy character of colour of the acid base indicator alizarin yellow R is studied in the paper.
研究了酸碱指示剂茜素黄R颜色的模糊特性。
Using the ca reagent carboxylic acid na as the indicator for the determination of calcium ion in the rain was reported. The whole experiment can be carried out under the natural condition.
提出用钙试剂羧酸钠作指示剂络合滴定法测定降水中钙离子，在自然条件下终点的观察即能顺利进行。
Such problems are discussed that low-acidity emerges in the quality analysis of hydrochloric acid and the chromogenic reaction of acidic-analysis indicator doesn′t work.
对盐酸质量分析中出现的酸度低、酸度分析指示剂不显色等问题进行了讨论。
The fatty acid is an important indicator to measure the quality of soybean.
脂肪酸值是衡量大豆品质重要指标。
Ergosterol can be a good indicator for phytase generation or phytic acid degradation in solid-state fermentation of soyban meal.
麦角固醇含量的变化可以反映出固体发酵过程中植酸降解或植酸酶生成量的变化。
Ergosterol can be a good indicator for phytase generation or phytic acid degradation in solid-state fermentation of soyban meal.
麦角固醇含量的变化可以反映出固体发酵过程中植酸降解或植酸酶生成量的变化。
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